ADC 169 

Inclusion of UID of Items in DLMS Requisition and Material Release Transactions 

1. ORIGINATOR: 

a. Service/Agency: Defense Logistics Management Standards Office (DLMSO)

b. Sponsors:

(1) Supply Process Review Committee, Chair: Ellen Hilert, DLA DLMSO/J-6251, Defense 

Logistics Management Standards Office (DLMSO), 703-767-0676 (DSN 427), ellen.hilert@dla.mil

(2) Unique Item Tracking Committee (UITC)/MILSTRAP Chair: Mary Jane Johnson, DLA 

DLMSO/J-6251, Defense Logistics Management Standards Office (DLMSO), 703-767-0677 (DSN 

427), mary.jane.johnson@dla.mil

2. REFERENCES: 

 a. All DLMS Supplements listed in this memorandum are posted to the DLMSO Web site at 

http://www.dla.mil/j-6/dlmso/elibrary/TransFormats/x12.asp. Federal Implementation 

Conventions are available at http://fedebiz.disa.mil/cgi/advsearch.cgi. 

 b. UID policy and associated documentation is available at: http://www.acq.osd.mil/dpap/UID/

3. FUNCTIONAL AREA: Primary: Supply

4. REQUESTED CHANGE: 

a. Title: ADC 153, Inclusion of UID of Items in DLMS Requisition and Material Release 

Transactions.

b. Description of Change: This change updates the DLMS 511R, Requisition; 511M, 

Requisition Modification; 940R, Material Release; and 945A, Material Release Advice transactions 

to carry UID data. Component system changes which are required to support the integration of the 

UID data requirements are not identified in this change. 

c. Background: 

(1) Previously Approved DLMS Change (ADC) 127 updated DLMS manual front matter to 

include unique item identification related definitions and acronyms as provided below for ease of 

review: 

Terms and Definitions

Unique Identification (UID) of Items. The application of a set of data elements that is globally 
unique and unambiguous, ensures data integrity and data quality throughout life, and supports 

multifaceted business applications and users. 

Unique Item Identifier (UII). An identifier used in unique item tracking programs to uniquely 

identify an individual asset used within DOD. The UII may be derived from a DOD-approved 

commercially-accepted identification methodology [e.g., Vehicle Identification Number (VIN)] or a 

composite structure defined by the DOD [refer to UID Construct 1 and UID Construct 2]. 

Formation of the UII relies upon two primary methods of serialization: (1) Serialization within the 

enterprise and (2) Serialization within the original part number of the enterprise. Regardless of 

which numbering system is used, the UII must include the Enterprise Identifier. Refer to OSD 

policy and supporting documentation for specific guidance at http://www.acq.osd.mil/dpap/UID/. 

Refer to MIL-STD-130L for specific guidance marking of U.S. Military property. 

Unique Item Identifier (UII) Type. A designator that identifies the specific structure and syntax of a 

type of UII. Specific examples of the UII Type are: Vehicle Identification Number (VIN), UID 

Construct I (UID1), UID Construct I (UID2).

Unique Identification (UID) Construct I. This is a concatenated UII based upon serialization 

within the enterprise. The UII contains the IAC, EID, and serial number. 

Unique Identification (UID) Construct II. This is a concatenated UII based upon serialization 

within the part. The UII contains the IAC, EID, original part number, and serial number. For legacy 

material, a subset of UID Construct II (referred to as Construct IIA) contains a batch, lot number, or 

other production run number required for uniqueness of the serial number within the part.

Acronyms and Abbreviations:

UII Unique Item Identifier 

UID Unique Identification 

 

 (2) This PDC complements and supports PDC 147, November 4, 2004, DLMS Unique Item 

Tracking (UIT) Procedures – New Chapter 19 (Supply/UIT) 

d. Modify DOD 4000.25-M, DLMS Manual to update DLMS Supplements as follows. 

Mapping and associated notes for ANSI ASC X12 formats are identified at paragraph 7 below. 

Changes to the 511 and 945 are at the ANSI ASC X12 Version 4010. Changes to the 940 are at 

Version 4030. Changes will be carried over to XML equivalent transactions. 

(1) DLMS Supplements 511M, 511R, 940R, and 945A are intended to support the following 

data configuration. 

(a) At the transaction level, existing material identification is retained, e.g. NSN or 

part number/CAGE. 

(b) The UIT loop provides specific UID information allowing flexibility to identify the 

item by either the UII or the serial number (serial number may be required for existing UIT 

systems). 

(c) Additional data may be related to the primary UID number but are not mandatory. 
The following related data elements are permitted: Serial Number (to be used, if needed, when the 

UII is the primary identification number); Batch/Lot; and Manufacturer ID. 

(d) The UIT loop is repeated for each item to be identified. 

5. REASON FOR CHANGE: 

 

a. OSD policy for the UID states that the Unique Item Identifier shall be the primary pointer or 

key data element for the AIS in all computational functions including inventory acceptance, item 

accountability, storage, issue, receipt, valuation, maintenance, and disposal. In support of this 

requirement, future logistics transactions must identify the UII. This change is required to 

incorporate the UII as currently defined within DLMS logistics exchange transactions and provide 

maximum flexibility. [Note: The UII terminology currently carried in DLMS is comparable to the 

serial number, but does not equate to a UII under the new DOD definition since it lacks 

“uniqueness” when used alone. This change incorporates the revised understanding of the term 

“UII.”] 

b. Requisitioning by UII/serial number is applicable in a very limited environment and will 

require separate DLMS changes focused on the applicable processes to develop the necessary 

infrastructure. This change is intended to restructure the DLMS transactions as a foundation for 

future information exchange based upon UID and as a planning tool for modernization. Potential 

applications of UID in requisitioning and material release processing include: 

(1) A revision to Joint Approved MILS Change Letters 12 (MILSTRAP) AND 43 

(MILSTRIP) Maintaining Accountability During Maintenance Actions, is currently under 

development. This revision is based upon the recommendations of the Joint Group Materiel 

Management, Inter-service Supply Support to Depot Maintenance (ISS to DM) Sub-group. The 

revision will include provisions for requisitioning reparables for induction to maintenance. When 

materiel is scheduled for organic maintenance, based on the repair schedule, the maintenance 

activity will requisition the materiel from the materiel owner using an standard requisition 

transactions (DLMS 511 or MILSTRIP A0_) citing Advice Code 2J, and coded in a manner which 

will preclude billing by the materiel owner. DLMS capability to identify the UID of the specific 

reparable(s) to be inducted might be used to increase the flexibility of this process. 

(2) Current MILSTRIP authorized the use of the standard format to requisition a 

specific item from Defense Reutilization and Marketing Service (DRMS) using the Defense TurnIn Document Number for identification of the item. This process supports one-for-one turn-in and 

requisition. DLMS capability to identify the UID of the specific item(s) might be used to increase 

the flexibility of this process by allowing identification of multiple items on a single requisition, 

including multiple items resulting from different turn-ins. 

(3) Once the UID is identified in the requisition, it might be subject to revision in the 

requisition modification, and would necessarily be perpetuated to the material release order. In 

addition, the supply source would be able to selectively release specific items according to criteria 

other than the customer’s requisition. However, it is not evident at this time that this constitutes a 

valid requirement. Identification of the UID in the material release confirmation might be useful 

should substitution be authorized by the shipping depot. 
6. ADVANTAGES AND DISADVANTAGES: 

a. Advantages: 

(1) Supports UID policy and UIT by UII, within the supply functional area. Additional 

changes may be required to define the procedures for specific functional processes, e.g., inducting 

specific requisitioned item into maintenance. This change is intended to provide flexibility in 

transmitting related UID/UIT data requirements.

(2) The DOD has determined that to provide reliable and accurate data for financial 

accountability, tangible items, meeting specific criteria, will be uniquely identified and marked. 

While specific policy for logistics and financial implementation of UID data has not been defined 

and documented, this PDC and others to follow are intended to position DLMS transactions to carry 

UID data. The Financial requirements for UID data once defined and documented, may drive or 

influence logistics use of the data.

b. Disadvantages: None specifically identified; however UID implementation policy is 

evolving and additional changes may be required to modify or enhance the transactional exchange 

as outlined in this proposal. This change establishes the transaction format, but does not provide 

procedural guidance for the use of the additional UID data content. DLA provided the following 

comment with regard to including UID data in A0_s and A5_s: The allocation of data elements in 

EDI transactions is innocuous. However, if the implementation of this concept comes with the 

expectation of standing up a new process to perpetuate UID data, we have some concerns. The 

middleware (known as See Beyond software or the eGATE) must be programmed how to handle 

any and all data passed through it. If new data is introduced to an interface as fundamental as the 

inbound orders and outbound MROs, we would require a significant period of time to sufficiently 

design, build, and test the changes. We have not even identified where to store such data due to the 

lack of any formal process documentation. Without a clearly stated process for the flow of data and 

expectations by all interface partners, there are obvious concerns on the BSM side for how this will 

work. 

7. IMPACT:

Publication(s): DOD 4000.25-M, DLMS, Federal IC for 511R, 511M, 940R, and 945A and 

corresponding DLMS Supplements. If needed, revisions to Federal ICs will be submitted to the 

EDISMC/Logistics Functional Work Group for coordination/approval. 

Item 

# 

Location 511M Revision Reason Federal 

IC 

Impact

1. DLMS 

Introductory 

Notes 

Added new DLMS note 5 to read: 

4. This transaction may be used to provide Unique 

Item Identifier (UII) information. Refer to the UID web 

at URL: http://www.acq.osd.mil/dpap/UID/ for DOD 

policy and business rules. 

To identify UID web URL No revision 

required 

2. DLMS 

Introductory 

Notes 

Added ADC 169 title to list of DLMS Changes to DLMS 

note 5.

- ADC 169, Inclusion of Data Supporting UID of Items 

in DLMS Requisition and Material Release Processes 

Identifies DLMS 

Changes included in 

the DLMS 

Supplement 

No revision 

required 
Item 

# 

Location 511M Revision Reason Federal 

IC 

Impact

3. 1/LQ01/60 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required 

4. 1/N101/70 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

5. 2/N901/20 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

6. 2/P0106/30 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

7. 2/LIN02/100 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

8. 2/MEA02/105 

 and 

2/MEA04/105 

Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

9. 2/LQ01/140 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

10. 2/N101/180 Revise Federal note as follows:

Use any code.

Administrative. 

DLMS Supplement 

authorizes specific 

qualifiers consistent 

with other DS.

Revision 

required

11. 2/REF/220 Revised REF Segment notes to read:

Federal Note:

Use the 2/REF/220 loop to provide Unique 

Identification (UID) information. 

DLMS Notes:

1. Use the 2/REF/220 loop in requisition modification 

transactions to supplement material identification in 

LIN03 of the 2/LIN/100 when requisitioning a specific 

Identifies the purpose 

of providing the 

Unique Identification 

(UID) information 

Revision 

required 
Item 

# 

Location 511M Revision Reason Federal 

IC 

Impact

item(s) identified by UID under authorized 

procedures. 

2. This segment supports item identification based 

upon the UII or the serial number. 

3. This segment also provides for use of a batch/lot 

number, when applicable. 

4. If UII and serial number, and/or batch/lot number 

are required for the item, enter the UII in REF01, and 

enter the serial number and/or batch/lot number in 

the subsequent N9 segment. If UII is not used, enter 

the serial number in REF01 and enter the batch/lot 

number in the subsequent N9 segment. If only 

batch/lot number is required, enter the batch/lot 

number in REF01. 

5. The entire 2/REF/220 loop is a DLMS 

enhancement. See introductory DLMS note 3a.

12. 2/REF01/220 Revised DLMS note for qualifier “SE” to read:

SE Serial Number 

Use to identify the serial number when UII is not 

required. If UII is required in addition to the serial 

number, enter serial number in N901. 

Identifies the purpose 

of serial number 

during Unique Item 

Tracking (UIT) 

No revision 

required 

13. 2/REF01/220 Add qualifier “U3” w/ the following DLMS note: 

Use to identify the UII. Place UII value in REF03. An 

ANSI data maintenance request has been prepared to 

request a new code qualifier for Unique Item Identifier 

for future use. 

Identifies the Unique 

Item Identifier (UII) 

value. 

No revision 

required 

14. 2/REF01/220 Deleted the following qualifier:

LT Lot Number 

Revised DLMS note for qualifier “BT” to read”

BT Batch Number 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run when 

UII and/or serial number are not required. If UII and/or 

serial number are required in addition to the batch/lot 

number, enter the batch/lot number in N901.

“BT” and LT Qualifiers 

have been combined 

and 

No revision 

required 

15. 2/REF02/220 Modified Data Element from “Must Use” to “Used”

and added the following DLMS note:

DLMS Note: 

For use with REF01 codes BT and SE.

Identifies the location 

of the serial number 

when used. 

Revision 

required 

16. 2/REF03/220 Opened REF03 and added the following DLMS 

note:

DLMS Note: 

Use to indicate UII value when REF01=U3.

Identifies the location 

of the UII value when 

used. 

Revision 

required 

17. 2/N901/240 Revised Data Element DLMS note: 

DLMS Note: 

 No revision 

required 
Item 

# 

Location 511M Revision Reason Federal 

IC 

Impact

The following codes are used to identify the 

characteristic not defined in the 2/REF/220 segment. 

18. 2/N901/240 Revised DLMS notes for qualifiers “BT” and “SE” 

BT Batch Number 

DLMS Note: 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run, when 

UII or serial number is entered in REF01, and 

batch/lot is also used 

SE Serial Number 

DLMS Note: 

Use to identify the serial number when UII is entered 

in REF01 and serial number is also used. 

 No revision 

required 

19. 2/N901/240 Deleted the following qualifiers:

LT Number 

Batch and Lot Number 

have been combined. 

 

No revision 

required 

Item 

# 

Location DS 511R Revision Reason Federal 

IC 

Impact

1. DLMS 

Introductory 

Notes 

Added new DLMS note 4 to read: 

4. This transaction may be used to provide Unique 

Item Identifier (UII) information. Refer to the UID web 

at URL: http://www.acq.osd.mil/dpap/UID/ for DOD 

policy and business rules. 

To identify UID web URL No revision 

required 

2. DLMS 

Introductory 

Notes 

Added ADC 169 title to list of DLMS Changes to DLMS 

note 5.

- ADC 169, Inclusion of Data Supporting UID of Items 

in DLMS Requisition and Material Release Processes 

Identifies DLMS 

Changes included in 

the DLMS 

Supplement 

No revision 

required 

3. 2/REF/220 Revised REF Segment notes to read:

Federal Note:

Use the 2/REF/220 loop to provide Unique 

Identification (UID) information. 

DLMS Notes:

1. Use the 2/REF/220 loop in requisition transactions 

to supplement material identification in LIN03 of the 

2/LIN/100 when requisitioning a specific item(s) 

identified by UID under authorized procedures. 

2. This segment supports item identification based 

upon the UII or the serial number. 

3. This segment also provides for use of a batch/lot 

number, when applicable. 

4. If UII and serial number, and/or batch/lot number 

are required for the item, enter the UII in REF01, and 

Identifies the purpose 

of providing the 

Unique Identification 

(UID) information 

Revision 

required 
Item 

# 

Location DS 511R Revision Reason Federal 

IC 

Impact

enter the serial number and/or batch/lot number in 

the subsequent N9 segment. If UII is not used, enter 

the serial number in REF01 and enter the batch/lot 

number in the subsequent N9 segment. If only 

batch/lot number is required, enter the batch/lot 

number in REF01. 

5. The entire 2/REF/220 loop is a DLMS 

enhancement. See introductory DLMS note 3a.

4. 2/REF01/220 Revised DLMS note for qualifier “SE” to read:

SE Serial Number 

 Use to identify the serial number when UII is not 

required. If UII is required in addition to the serial 

number, enter serial number in N901.

Identifies the purpose 

of serial number 

during Unique Item 

Tracking (UIT) 

No revision 

required 

5. 2/REF01/220 Add qualifier “U3” w/ the following DLMS note: 

Use to identify the UII. Place UII value in REF03. An 

ANSI data maintenance request has been prepared to 

request a new code qualifier for Unique Item Identifier 

for future use. 

Identifies the Unique 

Item Identifier (UII) 

value. 

No revision 

required 

6. 2/REF01/220 Deleted the following qualifier:

LT Lot Number 

Revised DLMS note for qualifier “BT” to read”

BT Batch Number 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run when 

UII and/or serial number are not required. If UII and/or 

serial number are required in addition to the batch/lot 

number, enter the batch/lot number in N901.

“BT” and LT Qualifiers 

have been combined 

and 

No revision 

required 

7. 2/REF02/220 Modified Data Element from “Must Use” to “Used”

and added the following DLMS note:

DLMS Note: 

For use with REF01 codes BT and SE.

Identifies the location 

of the serial number 

when used. 

Revision 

required 

8. 2/REF03/220 Opened REF03 and added the following DLMS 

note:

DLMS Note: 

Use to indicate UII value when REF01=U3.

Identifies the location 

of the UII value when 

used. 

Revision 

required 

9. 2/N901/240 Revised Data Element DLMS note: 

DLMS Note: 

The following codes are used to identify the 

characteristic not defined in the 2/REF/220 segment. 

 No revision 

required 

10. 2/N901/240 Revised DLMS notes for qualifiers “BT” and “SE” 

BT Batch Number 

DLMS Note: 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run, when 

UII or serial number is entered in REF01, and 

batch/lot is also used. 

 No revision 

required 
Item 

# 

Location DS 511R Revision Reason Federal 

IC 

Impact

SE Serial Number 

DLMS Note: 

Use to identify the serial number when UII is entered 

in REF01 and serial number is also used. 

11. 2/N901/240 Deleted the following qualifiers:

LT Number 

Batch and Lot Number 

have been combined. 

 

Revision 

required 

Item 

# 

Location DS 940R Revision Reason Federal 

IC 

Impact

1. DLMS 

Introductory 

Notes 

Added new DLMS note 5 to read: 

5. This transaction may be used to provide Unique 

Item Identifier (UII) information. Refer to the UID web 

at URL: http://www.acq.osd.mil/dpap/UID/ for DOD 

policy and business rules. 

To identify UID web URL No revision 

required 

2. DLMS 

Introductory 

Notes 

Added ADC 169 title to list of DLMS Changes to DLMS 

note 6.

- ADC 169, Inclusion of Data Supporting UID of Items 

in DLMS Requisition and Material Release Processes 

Identifies DLMS 

Changes included in 

the DLMS 

Supplement 

No revision 

required 

3. 2/LX/1400 Revise segment level notes

Federal Note:

1. Use the 2/LX/1400 loop to provide Unique 

Identification (UID) information when specific items 

identified by UID are directed for release under 

authorized procedures. 

2. Use as a counter to identify the number of 

2/LX/1400 loop iterations in the transaction set. 

DLMS Note:

1. Use the 2/LX/1400 loop in redistribution orders, 

material release orders, historical material release 

orders, material release order modifications, disposal 

release orders, historical disposal release orders, and 

disposal release order modifications when specific 

items identified by UID are directed for release under 

authorized procedures. 

2. Use a separate 2/Lx/1400 loop for each identified 

item.

 Revision 

required 

4. 2/N9/1500 Revised segment level notes:

Federal Note:

Use to provide Unique Identification (UID) 

information. 

DLMS Note:

1. This segment supports item identification based 

upon the UII or the serial number. 

Identifies the purpose 

of providing the 

Unique Identification 

(UID) information 

Revision 

required 
Item 

# 

Location DS 940R Revision Reason Federal 

IC 

Impact

2. This segment also provides for use of a batch/lot 

number, when applicable. 

3. Repeat the N9 segment as needed to identify 

desired characteristics for the specific item. 

4. The entire 2/N9/1500 segment is a DLMS 

enhancement. See introductory DLMS note 4a.

5. 2/N901/1500 Deleted the following DLMS note 1.

1. Use codes SE, BT and LT, separately or in 

combination, to identify appropriate information for 

unique item tracking. Multiple occurrences must be

restricted to any single qualifier.

 

6. 2/N901/1500 Add qualifier “U3” w/ the following DLMS note: 

Use to identify the UII. Place UII value in N902. If UII 

longer than 50 positions, place remainder of UII in 

N903. 

An ANSI data maintenance request has been 

prepared to request a new code qualifier for Unique 

Item Identifier for future use. 

Identifies the Unique 

Item Identifier (UII) 

value. 

No revision 

required 

7. 2/N901/1500 Revised DLMS note for qualifier “SE” 

SE Serial Number 

DLMS Note: 

Use to identify the serial number. 

 No revision 

required 

8. 2/N901/1500 Deleted the following qualifier:

LT Number 

Revise DLMS note for qualifier “BT”

BT Batch Number 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run

Batch and Lot Number 

have been combined. 

No revision 

required 

9. 2/N902/1500 Added DLMS Note:

For use with REF01 codes BT and SE. When N901 = 

U3, enter the UII value. If the UII value is greater than 

50 positions the value must be split between N902 

and N903.

Identifies the location 

of the UII value when 

used. 

No revision 

required 

10. 2/N903/1500 Opened data element and added DLMS note:

Use when N901 = U3 and UII value must be split 

between N902 and N903

Identifies the Unique 

Item Identifier (UII) 

value. 

Revision 

required 

Item 

# 

Location DS 945A Revision Reason Federal 

IC 

Impact

1. DLMS 

Introductory 

Notes 

Added new DLMS note 4 to read: 

4. This transaction may be used to provide Unique 

Item Identifier (UII) information. Refer to the UID web 

To identify UID web URL No revision 

required 
Item 

# 

Location DS 945A Revision Reason Federal 

IC 

Impact

at URL: http://www.acq.osd.mil/dpap/UID/ for DOD 

policy and business rules. 

2. DLMS 

Introductory 

Notes 

Added ADC 77 and 169 titles to list of DLMS 

Changes to DLMS note 5.

- ADC 77, Air Force Unique Management Coding for 

Materiel Management Aggregation Code (MMAC) 

- ADC 169, Inclusion of Data Supporting UID of Items 

in DLMS Requisition and Material Release Processes 

Identifies DLMS 

Changes included in 

the DLMS 

Supplement 

No revision 

required 

3. 2/LQ01/100 Added qualifier “GQ” with DLMS note

GQ Group Qualifier Code 

DLMS Note:

Use to identify the Material Management Aggregation 

Code (MMAC) for NSNs to be managed by a specific 

manager (i.e., System, program, aggregation, 

selected FSC, technology group). This is an Air 

Force-unique data element meaningful to the Air 

Force only. Non-Air Force components perpetuate 

without action. 

A data maintenance action was approved in version 

5010. The approved code/name is "MAC – Material 

Management Aggregation Code". The code source is 

identified as the Air Force Manual (AFMAN) 23-110, 

Volumes 1 and 2. 

Administrative 

updated to incorporate 

ADC 77 

No revision 

required 

4. 2/LX/110 Revised segment level notes

Federal Note:

1. Use the 2/LX/110 loop to provide Unique 

Identification (UID) information for the purpose of 

Unique Item Tracking (UIT) and when specific items 

identified by UID were directed for release under 

authorized procedures. 

2 Use as a counter to identify the number of 

2/LX/110 loop iterations in the transaction set. 

DLMS Note: 

1. Use the 2/LX/110 loop in material release 

confirmation, historical material release confirmation, 

disposal release confirmation, and historical disposal 

release confirmation transactions to provide unique 

item tracking (UIT) information, for controlled 

materials and when specific items identified by UID 

were directed for release under authorized 

procedures. 

2. Use a separate 2/LX/110 loop for each identified 

item.

 Revision 

required 

5. 2/N9/120 Revised segment level notes:

Federal Note:

Use to provide Unique Identification (UID) information 

Identifies the purpose 

of providing the 

Unique Identification 

(UID) information 

Revision 

required 
Item 

# 

Location DS 945A Revision Reason Federal 

IC 

Impact

DLMS Note:

 1. This segment supports item identification based 

upon the UII or the serial number. 

2. This segment also provides for use of a batch/lot 

number, when applicable. 

3. Repeat the N9 segment as needed to identify 

desired characteristics for the specific item. 

4. The entire 2/N9/120 segment is a DLMS 

enhancement. See introductory DLMS note 3a.

6. 2/N901/120 Add qualifier “U3” w/ the following DLMS note: 

Use to identify the UII. Place UII value in N902. If UII 

longer than 30 positions, place remainder of UII in 

N903. 

An ANSI data maintenance request has been 

prepared to request a new code qualifier for Unique 

Item Identifier for future use. 

Identifies the Unique 

Item Identifier (UII) 

value. 

No revision 

required 

7. 2/N901/120 Revised DLMS note for qualifier “SE” 

SE Serial Number 

DLMS Note: 

Use to identify the serial number. 

 No revision 

required 

8. 2/N901/120 Deleted the following qualifier:

LT Number 

Revise DLMS note for qualifier “BT”

BT Batch Number 

Use to identify the manufacturer's batch/lot number 

or other number identifying the production run.

Batch and Lot Number 

have been combined. 

No revision 

required 

9. 2/N902/120 Added DLMS Note:

For use with REF01 codes BT and SE. When N901 = 

U3, enter the UII value. If the UII value is greater than 

30 positions the value must be split between N902 

and N903.

Identifies the location 

of the UII value when 

used. 

No revision 

required 

10 2/N903/120 Opened data element and added DLMS note:

Use when N901 = U3 and UII value must be split 

between N902 and N903.

Identifies the Unique 

Item Identifier (UII) 

value. 

No revision 

required